As a newcomer to the linux version, I must say that the linux documenation of heliX is somewhat poor, inexistent.
leaving people to rely on community to succeed such trivial things as basic installation is not what I would expect for a software of this pricetag.

My question would be, is there any decent linux documentation somewhere?

At this time the software silently fails after language selection when I start it from comand line on my ubuntu system (15.05 64 oracle java 8)
I hope someone may have a clue regarding this issue?

I'm running on Mint 17.1 with Jre 7 perfectly also, As a matter of fact I very happy and grateful the author supports Linux. I looked at the other options including running in a windows 7 VM and this is by far the best option. While windows based software ran in VM, graphics acceleration was not supported and even on an 8 core machine things got choppy.